Applies to:

Turn off and choose "Flat" for any bass, treble or other EQ and sound processing settings on your Bluetooth device. Check for these settings both in the device's audio settings and also in the settings for the app that is being used

Set the volume level of your Bluetooth device to 85%. If the volume output of the device is too loud, it might cause distortion in connected speakers. If the volume of the device is too low, it can also affect the sound

Try a different app. If sound quality is OK in one app but not in another, the app is the issue

Try moving your device closer to the speaker. Bluetooth range is about 30 feet. Range is reduced when interference is present.

Reduce the number of applications running on your Bluetooth device. Running multiple apps can reduce reliability if the device is trying to do too much at once. Close non-essential apps and check if the sound improves

Try turning off Wi-Fi® on the device

Go to Bluetooth settings on your device, select the SoundLink speaker and choose to "Forget" or "Remove" the speaker. Next, briefly hold the Bluetooth button on the speaker until the Bluetooth light begins flashing blue. Then try again to pair the device to the speaker

Turn the speaker off and back on

Disable Bluetooth on other connected devices that are not currently in use. The speaker will pair to the two most recently used devices in its memory. Sound might drop out if a second connected Bluetooth device goes out of range of the speaker

Reset the device you are trying to pair. This is typically done by rebooting/restarting it or removing the battery and/or power cord for one minute

Reset the speaker by turning it on and then holding the power button for 10 seconds until it turns off.

A factory reset clears the speaker's language setting and its paired mobile device memory, returning the speaker to original factory settings. Once reset, turn the speaker on and try again to pair the device